Also earlier you may have spotted my saying that Bocking 14, the variety Moggler has, is not invasive hence the advice

By mixing it with "thugs" you will probably need to dig up parts of the area, this will result in small bits of root being broken off which will produce a comfrey jungle.

When they are in leaf, I will produce a photo of my comfrey patch which has not been touched (except to harvest and feed the plants) since they were planted 5 years ago. The patch is the same size as it was then

Had to decide where to put mine. I got hold of three bags of manure today and when we got back in the car we soon realised it was very fresh :o. Went up to the lottie to line my pond and dig yet another potato trench and put the manure in a covered pile where I am going to site my comfrey patch.